John A. Wismer

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Devon, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for continuous liquid phase reaction of hydrogen fluoride a...
- Patent number 5,608,124
- Issue date Mar 4, 1997
- Elf Atochem North America, Inc.
- John A. Wismer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for removing sulfur from organic polysulfides
- Patent number 5,242,672
- Issue date Sep 7, 1993
- Elf Atochem North America, Inc.
- Jeffrey H. Yen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the separation of hydrogen fluoride, 1,1-dichloro-1-flu...
- Patent number 4,975,156
- Issue date Dec 4, 1990
- Atochem North America, Inc.
- John A. Wismer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the separation of 1,1-dichloro-1-fluoroethane and 1,1,1...
- Patent number 4,950,364
- Issue date Aug 21, 1990
- Pennwalt Corporation
- John A. Wismer
- C07 - ORGANIC CHEMISTRY